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BP’s North Sea Portfolio Map

BP Schiehallion:

Other images at http://www.oedigital.com/component/k2/item/3480-quad-204-takes-shape-subsea

EPIC

Creating a severe-weather riser system

Jeannie Stell provides an update on BP’s partnership with Wood Group Kenny to design and manufacture an

FPSO riser suitable for the “dark and stormy” weather at

BP’s Quad 204 redevelopment.

BP and Wood Group Kenny have worked together for the past 15 years, since 2010, to design a robust riser system capable of serving a harsh environment ? oating production storage and of? oading (FPSO) facility with a 25-year life cycle. The robust riser technology will be married to a production platform, the new, purpose- built, turret-moored Glen Lyon FPSO, slated to tackle BP’s massive subsea asset — the Quad 204.

Located west of the Shetland

Islands in Blocks 204 and 205 of the

UK Continental Shelf at water depths of 300m to 550m, the new Quad 204 is an ambitious project to redevelop- ment the Schiehallion and Loyal ? elds.

Considered to be one of the largest and deepest developments in the North Sea, the Schiehallion is one of the largest UK

North Sea ? elds discovered to date.

The plan is to construct a new FPSO unit to replace the existing Schiehallion

FPSO and the project will include an extension of the existing subsea system with 15 new and replacement ? ow lines, 21 new and replacement risers and 14 new wells added to the 52 existing wells.

Although the ? eld has been in opera- tion since 1998, recent appraisals show that the ? eld holds more reserves than originally anticipated. This redevelop- and is estimated to cost about US$5 One of the most critical challenges to the ment will give BP the ability to increase billion. Partners in the project include project will be the engineering, manufac- production. The FPSO and its subsea BP (36.3%), Hess (12.90%), Murphy turing and installation of the FPSO risers, structures will be installed in modules Petroleum (4.84%), OMV (4.84%), Shell which must be long-lived and able to and the total facility is expected to begin (36.3%) and Statoil (4.84%). withstand an extremely severe environ- producing in 2017 to reach an eventual ment. In fact, the location has been known

Stormy weather capacity of 130,000 b/d of oil. The project to experience harsher weather than most will extend the life of the two ? elds to The project is an unusual amalgamation other UK marine environments. The top- continue production beyond 2035. where new equipment will be integrated side weather can include 40 mph winds,

The project was approved in July 2011 into an existing brown? eld environment. 18m high waves, and complex, severe

June 2015 | OE oedigital.com 38 038_OE0615_EPIC1_Jeannie.indd 38 6/1/15 11:19 AM